Factorise: a^2 - 0·36 b^2 - Vidyadip

Question

Factorise: $a^2 - 0·36\ b^2$

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Answer

$a^2 - 0·36\ b^2$
$= (a)^2 - (0.6b)^2$
$= (a + 0.6b)(a - 0.6b) ...[a^2 - b^2 = (a + b)(a - b)]$

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